1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d28fb35f01f1463441a9f65207c1d355af80aa326aeae70464ab0f909b36828. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60beb685-4335-4825-8e6d-3fe97ca54585.json and https://artists.proofprofile.net/proofs/artist/60beb685-4335-4825-8e6d-3fe97ca54585.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d598207e244beeaff2e9ad3c069f5751e4ec711918bed37fd139fea04507fe4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c070b452a02b171e1c4cc7a041e35dc310ee4fbbdf2cd1ba47850ca54734c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478d8f6c4e5d8619500880738160497ca99111dcc7cccc83378efd339312e4bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea2af20d3473c5735ed85562a210e474d9b2725c462c6283ddadc0a37a56749. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15fce64e749daf0405462d2f6f78933e6d0a757d8522b44086b80b38357b839. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc127b03b644cabae2292aa9f0dc4f99bb9f3b755f84935fec0d0d044a783601f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b1a92d6afe379612979283df2e01f98844bc83635900791825d33e182a340. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17542fe3b06074383d00bba21e14874c3ff5bc85a16f121e813e3ea41a750197. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb699fb5870e5977ec680c8953f6b0e2227ef2862700a8b51c39a0bd666f55d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5533e36cb047339f8cf5a181ea979305481b32528ae319e15e221b69d7c8e7b1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2c6ea7acdf4044c965d7edccaa829307b2115dedcad152eeab7a5a3ef442df. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf223568bb21736404cee04c00e9cb7e48f67cb9375fe22446d863e0acfaf06c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dfe10cae681a4273f7c2503bbdf6bf3ad0d0434891ca0e519b5fcbffda7836. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72060979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b14e09282233bf7d20afb33fcf70d0264ff682f395bc00fa5a58776a95d7f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855b53b46c1f418363a43898b8fda2d5c2ef11c528c90b4f8414cbab4cb467d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d89fb74287f031ad692585a9279bd3a90b3b87e33a52d0c2e29900269d5b2e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a750fd9dd2cdc7fa5fc4697610618f06a118c5ec3a236e155dbf23e4be60f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1a645b1c1d9c67e1200b83b368b22a8ed98280f4f7e3bfadb86c11f2808315. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b2250e43ca4589b02513e1c16d39a4f3ee368b95bf3845188e3b7ec1a3e627. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0c49f4c8503497f1e96193f6da462d69ac18364fa43e52acc05608ec019744. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10c685618e68380495471510af147e7d752da42330a5fd84fbc53fbaf4119f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3686be42dbf18f6d7dbd51e74595935e91a6062950f8f60325a516d8b880192. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ce88e88c6ae63f898db8a94e5a5c98070caf1043b713b36e907d9dd0cc4af3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe49b9a17ae5ac5cb9a3307022067bb0f51ad7a88a034a380df418de22381613. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688a1f4a9d377bf7f498d1b0558b6919291992f54fe05eb815b27971f28aec67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671af20b9811ab16b0816febb96b38e2da4cca17ec05980cb367e6ae87041ab5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d5758eb5ceac024e5798b62e040e547068680d1ea950ba79cd3ada51cc879a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62076458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f2ea1689c6504821472a3e5298f745282a2da030570d7b8f5091fb4c5d9f08. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62052067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1557b72546b378d6238686d453b3232b579663a02dc12a8e9cd0f769f8f3122. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q1957143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213180d9613c0ba2df0a0bfdae6f5b6cffb8f28c228587616ff24ad07733131d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2071475.